can link

canlink.py

import subprocess
import tempfile
import os
import sys

def test_link(function_signature, flags):
    function_name = function_signature.split('(')[0].split()[-1].strip()
    with tempfile.NamedTemporaryFile(delete=False, suffix='.c', mode='w') as temp_file:
        test_code = f'''
#include <stdio.h>

{function_signature}

int main() {{
    // Using the function address to bypass direct function call
    void *ptr = (void*){function_name};
    return 0;
}}
'''
        temp_file.write(test_code)
        temp_file_path = temp_file.name

    compile_command = f'gcc {temp_file_path} {" ".join(flags)} -o {temp_file.name}.out'
    try:
        subprocess.check_output(compile_command, shell=True, stderr=subprocess.STDOUT)
        result_message = "Linking succeeded."
    except subprocess.CalledProcessError as e:
        result_message = "Linking failed. Error:\n" + e.output.decode('utf-8')

    # Clean up
    os.remove(temp_file_path)
    out_path = f'{temp_file.name}.out'
    if os.path.exists(out_path):
        os.remove(out_path)

    return result_message

def main():
    if '--' in sys.argv:
        split_index = sys.argv.index('--')
        function_signature = sys.argv[1]
        flags = sys.argv[split_index+1:]
    else:
        print("Usage: script.py \"function signature\" -- [flags]")
        sys.exit(1)

    result = test_link(function_signature, flags)
    print(result)

if __name__ == "__main__":
    main()

example.md

Let the signaure be for example

extern XExtDisplayInfo *XextAddDisplay(
    XExtensionInfo*     /* extinfo */,
    Display*            /* dpy */,
    _Xconst char*       /* ext_name */,
    XExtensionHooks*    /* hooks */,
    int                 /* nevents */,
    XPointer            /* data */
);

then you can test

python canlink.py "void* XextAddDisplay(void*, void*, void*, void*, int, void*);" -- -L. -lXext